參數(shù)資料
型號: DS4000EC/WBGA
廠商: Maxim Integrated Products
文件頁數(shù): 14/16頁
文件大?。?/td> 0K
描述: IC OSC TCXO 14.31818MHZ 24-BGA
標(biāo)準(zhǔn)包裝: 135
類型: 溫度 - 補償晶體振蕩器(TCXO)
頻率: 14.31818MHz
電源電壓: 4.75 V ~ 5.25 V
電流 - 電源: 1.5mA
工作溫度: 0°C ~ 70°C
封裝/外殼: 24-BBGA
包裝: 托盤
供應(yīng)商設(shè)備封裝: 24-WBGA(11x9)
安裝類型: 表面貼裝
DS4000 Digitally Controlled TCXO
7 of 16
TEMPERATURE-COMPENSATED CRYSTAL OSCILLATOR
The DS4000 can either function as a standalone TCXO or as a digitally controlled TCXO. When used as a
standalone TCXO, the only requirements needed to function properly are power, ground, and an output. However,
the 2-wire interface must be used to tune (push and pull) the crystal.
The DS4000 is capable of supplying two different outputs, F1 and F2.
1) F1 is the base frequency of the crystal unit inside of the device. The output type is a CMOS square wave.
2) F2 is a programmable frequency output. The frequency select register can program this output to an integer
division of the base (F1) frequency. The duty cycle (DC) bit determines if the output is an n + 1 or a 2(n + 1)
division of F1.
F2 FREQUENCY SELECT REGISTER (FSR) (5Dh)
Bit
7
6
5
4
3
2
1
0
Name
D7
D6
D5
D4
D3
D2
D1
D0
Default
0
F2 = F1 / (FSR value + 1); with DC = 0
F2 = F1 / [2 x (FSR value + 1)]; with DC = 1
TCXO CONTROL REGISTER (60h)
Bit
7
6
5
4
3
2
1
0
Name
X
F2OE
F1OE
FT
DC
Default
0
DC, Duty Cycle Bit: If 50% duty cycle is desired, then this bit must be set to logic 1. The default condition at
power-up is logic 0.
FT: This bit must be programmed by the user to 0.
F1OE, F1 Output Enable Bit: This bit allows the user to disable/enable the F1 output.
F2OE, F2 Output Enable Bit: This bit allows the user to disable/enable the F2 output.
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